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飞机在中、低空某些气候条件下易结冰,尤其是着陆状态,它将对飞行安全造成极大威胁。1993年11月13日,中国北方航空公司的2141号MD-82客机在进行航班飞行时在乌鲁木齐机场坠毁,造成12名机上人员死亡。该机是在结冰气候条件下着陆时坠毁的。有分析表明,该机的防冰系统设计在防冰能力、防冰控制的多功能控制活门等问题上存在明显不足。在此基础上,MD-90飞机防冰系统作出了很大改进。飞机着陆状态的防冰飞机的发动机、机翼和尾翼结冰,将影响飞机性能并危及航空安全。机翼结冰将破坏飞机的气动外形,增加飞机阻力和重力,而尾翼结冰还将影响飞机的操纵性。对MD-80系列飞机来说,机翼结
Plane prone to icing in some climates, especially in low and medium altitudes, will pose a significant threat to flight safety. On November 13, 1993, China Northern Airlines’ No. 2141 MD-82 crashed on the flight at Urumqi Airport, killing 12 crew members. The plane crashed on a landing in icy conditions. Some analysis shows that the aircraft anti-icing system design in anti-ice capacity, anti-ice control of multi-function control valve and other issues there is a clear problem. On this basis, MD-90 aircraft anti-icing system has made great improvements. Ice-making aircraft engines, wing and tail icing on aircraft landing conditions will affect aircraft performance and endanger aviation safety. The icing of the wing will destroy the aerodynamic shape of the aircraft, increase the resistance and gravity of the aircraft, and icing of the tail will also affect the maneuverability of the aircraft. For the MD-80 series aircraft, wing knots